-86.13% is the change from 613 to 85
Calculation steps:
[( 85 - 613 ) ÷ 613] x 100 = -86.13%
Formula
Percentage change = [(85 - 613) / 613] x 100
Subtract the new number by the original number
85 - 613 = -528
-528 ÷ 613 = -0.8613376835236541
-0.8613376835236541 x 100 = -86.13%